diff --git a/databaseparsers/__init__.py b/databaseparsers/__init__.py
index 86c9b71..71da07d 100644
--- a/databaseparsers/__init__.py
+++ b/databaseparsers/__init__.py
@@ -41,7 +41,7 @@ def load(self):
         from nomad.parsing import MatchingParserInterface
         from . import openkim
 
-        return MatchingParserInterface(self.parser_class_name, **self.dict())
+        return MatchingParserInterface(**self.dict())
 
 
 openkim_parser_entry_point = EntryPoint(